O.d.

Oh yeah he's real smart all right? He doesn't know if he can put a pistol grip on a shifter? He doesn't know if he wants a 451 Stroker which I personally have never heard of or well-built 340 he doesn't know what overdrive tranny can handle and can't ? He should get a scatter shield and wear it over his head ! Please name how many personal times you've seen a Mopar flywheel scatter?

Easy boy. We all started somewhere.

The problem with the OD 4 speed is, the counter shaft spins with the main shaft. That's a lotta weight and a lot more stress. The outcome will not be favorable. It's really that simple.